The phrase "as needed to maintain" is correct and usable in written English.
It can be used when discussing requirements or actions that should be taken to ensure something remains in a desired state or condition.
Example: "The system will automatically adjust the settings as needed to maintain optimal performance."
Alternatives: "as required to sustain" or "as necessary to preserve".
If these standards are not maintained, Housing & Residential Services staff may have the area cleaned as needed to maintain safe and sanitary conditions.
Diets contained 24% corn silage and 22% hay, averaging 20% alfalfa and 2% grass but being adjusted as needed to maintain dietary concentrations of 36% neutral detergent fiber.
After that, isometric or dynamic contractions started, and the subjects were asked to maintain effort levels as, needed, to maintain the target torque levels until the end of the stretch.
This method allows many electrodes to be implanted chronically in the brain and adjusted as needed to maintain isolation.
Passive springs and shock absorbers will give way to powerful linear motors that move wheels vertically as needed to maintain traction beneath and a smooth ride above.
Bulbs need light watering until the leaves and buds emerge, and need to be situated in a well-lit, cool place and watered as needed to maintain moderate soil moisture.
pH dosing set points were adjusted as needed to maintain the desired pCO2 in each treatment.
In the Venturi mask group, FiO2 was 60%% (15 L/min) initially and was then adjusted as needed to maintain SpO2 of at least 95%%.
The amount fed was adjusted as needed to maintain body condition and BW as determined by the primary feeder from 3 May - 26 October 2010.
Plants were watered as needed to maintain the soil moisture near field capacity and fertilized weekly with 20 N:20P 20 K until three-week-old, at which point they were subjected to drought stress by withholding water.
Subjects were medicated with a pre-anesthetic mix of Telazol (tiletamine/zolazepam) 4.4 mg/kg and xylazine 2.0 mg/kg intramuscularly, endotracheally intubated and anesthetized with 3% inhalational isoflurane (with concentration adjusted as needed to maintain anesthesia).
